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if nine squares are chosen at random on a chess board,what is the probability that they from a square of size 3*3 ...

Q1)Two positive charges +Q are held fixed a distance d apart.A particle of -ve charge -q and mass m is placed mid way between them nd thn given a small displacement perpendicular to the line joining thm nd released.The partic ...

In a game , a man wins a rupee for a six and loses a rupee for any other number when a fair die is rolled. The man decided to throw a die thrice but to quit as and when he gets a six . Find the expected value he wins or loses ...

SHORTCUT NEEDED!!!! LET S(t) be the area inclimed betwn parabola y = x2 + 2x - 3 and da line y = tx +1, then wat are the values of t for least value of S(t)??? ans : t = 2, 32/3 ...

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WHAT ARE NON INTEGRABLE FUNCTIONS? GIVE EXAMPLES. ...

Guys a big Conceptual Doubt. Have A look. Surface energy is the work done per unit area in the surface against force of surface of tension at constant temp. and surface energy is numerically taken equal to surface tension. Bu ...

Moment of Inertia of: Ring = mr2 = Hollow Cylinder Disc = mr2/2 =Solid Cylinder Just elongate the ring in the direction of the axis of rotation and you'll get a hollow cylinder. Just elongate the disc in the direction of the ...

please go thru the reaction and reply whether it is a possible reaction and give ur explanation dat supports ur ans *Image* ...

A bottle contains 1 mol He(g) and second bottle contaisn 1 mole Ar(g) at the same temperature.At this temp. ,the rms of HE is 1477 m/s and of Ar is 467 m/s.What is the ratio of no. of HE atoms in 1st bottle to the no. of Ar a ...

a long horizontal rod has a bead which can slide along its length and initially placed at a distance L from one end A of the rod The rod is set in angular acceleration a' If the coefficient of friction between the rod and the ...

An organ pipe is in resonance at its fundamental mode with a tuning fork which in turn produces k beats per second with another tuning fork of n Hz.When the organ pipe is dipped in water to one-third of its original length,it ...

x1, x2, x3, ... is defined recursively by x0 = 1, xn+1 = (3xn + 5xn2- 4 )1/2 Show that all these are integers! ...

If limx→0 [(1+λ) + 8e1/x] / [1+ (1-k)e1/x ]= 2, then λ+k =? ...

An urn contains 5red and 3white marbles.A marble is selected at random from the urn, and discarded two. 1)Probability of second marble being red is _____ 2)Probability of both marbles being of the same color_______ 3)Probabil ...

A block of mass 4m and a conducting square loop of mass m are connected by light insulating string passing over smooth pulley.The plane of loop is perpendicular to the magnetic field,as the system si relaesed. *Image* a)the b ...

LIMITs *Image* ...

A uniform charge density σ is given to a non conducting uniform disc of radius r,what is the potential of a point at the circumference ...

*Image* passage: a rod of mass m n length l is placed vertiaclly on a smooth floor as shown in the fig.. The lower end of the rod is given a negligible slight push towrds left due to which the lower end of the rod moves towar ...

please give me a possible mechanism for the product *Image* ...

Q. Consider an excited hydrogen atom in state n moving with a velocity v(v<<c). It emits a photon in the direction of its motion and changes its state to a lower state m. Apply momentum and energy conservation principle ...

compound given below is reacted wid NBS..WATS D PRODUCT C - C = C - C - C 1 CH3 ...

MULTIPLE OPTIONS CORRECT The equation x2 + 2xy + x - 3 - y + y2 = 0 represents a conic with (A) eccentricity 1 (B) vertex (1.5,-1.5) (C) axis as x + y = 0 (D) length of latus rectum 1 ...

*Image* and option c is *Image* ...

THIS ONE IS FRM DA FORUM ITSELF : If f(x) f'(x) f"(x)>0 for all x in R, prove that f(x) is a strictly increasing function CAN NE1 PLZZZ XPLAIN ME THIS EXPLANATION OF CELESTINE f'x never 0 , so either strict inc or strict d ...

prove that summation k=1 to k=n-1 (n-k)cos(2kpi)/n = -n/2 for all n≥3 , n belongs to integer. ...

Q21) lim { [x]+[2x]+[3x]...............[Nx] } / N2 N→∞ a) 1/2 b) does not exist c) 1 d) None of these Can sum1 first of all plz tell me if [] in da que denotes gr8est int functn or not??? Then i shall re-try, coz i earlie ...

i need the detailed solution for the derivative of: tan x ...

1)can u please give me a easier proof for the area of parallelogram whose adjacent sides are represented by a→and →b 2)can u please derive me the volume of the tetrahedron using vectors??? ...

the pole of st. line 9x+y-28=0 wrt the circle; 2x2+2y2-3x+5y-7=0 is a)(3,1) b)(1,3) c)(3,-1) d)(-3,1) plz give idea abt. this & how 2 solve various prob. on this ...